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Help removing reddish deposits on ancient silver coin?
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<p>[QUOTE="Curtis, post: 24842340, member: 26430"]The 1936 Dorchester Hoard coins (mid-3rd century Roman AR Antoniniani) often have those red deposits: I've left mine alone (as previous owners did for ~85 years!), though I'm sure it would be easy to smooth them down a bit. Here's an example:</p><p>[ATTACH=full]1591429[/ATTACH]</p><p><br /></p><p>I bought a few AR Antoniniani a few years ago with only a recent Canadian collection history, but they still had some degree of similar red deposits. I wonder if they might also be from the Dorchester Hoard? (These types were in it, but it was too big to record individual specimens; in principle, though, there's information in the patina.)</p><p>[ATTACH=full]1591431[/ATTACH]</p><p><br /></p><p>I have a couple of Carthaginian EL Staters (c. 300 BCE, give or take a couple decades) that have much more minor deposits, but similar.</p><p><br /></p><p>They're small, but you can see them in a few recesses on the reverse (and a couple spots in the fields on the obverse) -- look especially around the horse's legs & face/neck:</p><p><br /></p><p>[ATTACH=full]1591430[/ATTACH]</p><p><br /></p><p>In hand, they have that typical rough, reddish-brown quality.</p><p><br /></p><p>One sees that on a lot of the specimens that came onto the market in the 2010s. It may or may not ever be possible to connect any of the coins to a single deposit or findspot. But they don't bother me, and add the potential of preserving some information.[/QUOTE]</p><p><br /></p>
[QUOTE="Curtis, post: 24842340, member: 26430"]The 1936 Dorchester Hoard coins (mid-3rd century Roman AR Antoniniani) often have those red deposits: I've left mine alone (as previous owners did for ~85 years!), though I'm sure it would be easy to smooth them down a bit. Here's an example: [ATTACH=full]1591429[/ATTACH] I bought a few AR Antoniniani a few years ago with only a recent Canadian collection history, but they still had some degree of similar red deposits. I wonder if they might also be from the Dorchester Hoard? (These types were in it, but it was too big to record individual specimens; in principle, though, there's information in the patina.) [ATTACH=full]1591431[/ATTACH] I have a couple of Carthaginian EL Staters (c. 300 BCE, give or take a couple decades) that have much more minor deposits, but similar. They're small, but you can see them in a few recesses on the reverse (and a couple spots in the fields on the obverse) -- look especially around the horse's legs & face/neck: [ATTACH=full]1591430[/ATTACH] In hand, they have that typical rough, reddish-brown quality. One sees that on a lot of the specimens that came onto the market in the 2010s. It may or may not ever be possible to connect any of the coins to a single deposit or findspot. But they don't bother me, and add the potential of preserving some information.[/QUOTE]
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Help removing reddish deposits on ancient silver coin?
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